A double pipe heat exchanger consists of one pipe placed inside another, allowing two fluids to flow separately for efficient heat transfer. It can operate in parallel or counterflow arrangements, depending on temperature requirements. Commonly used in chemical, food, and oil industries, it offers a simple design, easy maintenance, and effective thermal performance for small to medium... https://www.heatexchanger.co.in/Heat-Exchanger/Double-Pipe-Heat-Exchanger/